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Eind the volume of a sphere whose surface area is 154 cm. |
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Answer» Let r cm be the radius of sphere Surface area of the sphere = 4πr2 154 = 4πr^24 x 22/7 x r^2= 154 r^2=154 x 7/4 x 22 = 72/22 r = 7/2 Volume of sphere =4/3πr^3 = 4/3 x 22/7 x 7/2 x 7/2 x 7/2 cm3 = 539/3 cm3= 179.2/3 cm3 |
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